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a(n) = position of n in A169847.
1

%I #6 Jun 04 2022 21:53:16

%S 2,5,3,9,4,13,1,6,8,19,7,27,12,10,16,32,11,36,17,14,18,42,15,23,26,21,

%T 25,56,22,60,30,20,31,24,29,66,35,28,39,73,34,80,40,38,41,88,44,49,45,

%U 33,46,99,47,52,48,37,55,106,51,114,59,50,63,53,58,127,64,43,54,133,62,137,65

%N a(n) = position of n in A169847.

%C A generalization of A064421.

%K nonn

%O 2,1

%A _T. D. Noe_ and _N. J. A. Sloane_, Jun 02 2010